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The Mbashe estuary
(32°15' S;
28°54' E)
is situated south of the coastal town of Port St Johns on the Transkei coast of the Eastern Cape. This system drains a catchment area of approximately 6 030 sq. km. About 25% of the land-cover in the Mbashe catchment comprised agriculture, mostly subsistence farming, commercial forestry, commercial temporary dryland agriculture and commercial temporary irrigated agriculture. Approximately 28% of the catchment was degraded grassland while 43% was natural. Natural land-cover consisted of grassland, thicket and bushland, and forest. Residential (rural) development comprised 5% of the catchment land-cover.
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